I don't know if this has been said, but it is nice to see your genuine concern. If you work at one of these stores, I would change clothing and shower before getting near any of my own snakes. Good luck with whatever you decide. The store probably won't change.
Whenever I find a knowledagble person at a pet shop, they do not stay long, except for one in town that does take care of ther animals. The employees won't even use the vet that works out of the same building LOL. I rarely buy supplies from these stores, just allways curious when near one as to their husbandry practices. I never handle any animals, and clean any supply I might purchase, shower and change clothes. I do not trust these pet shops due to their husbandry practices.
You have been upfront with your personal issues and that takes strong character. Realizing you have these issues means you can do somthing about it. It is those that don't realize they need to work on things that have no hope. I admire your openess and concern for animals. Hang in there bro, things will get better. I do agree with being discreet. I love questioning managers at these type of stores just to watch them skirm. One local shop, who fired great employees actually asked if customers could email me for advice on snakes. I said yes, not for the store, but for the customers and their snakes.